US4194752A - Skateboard - Google Patents

Skateboard Download PDF

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Publication number
US4194752A
US4194752A US05/890,519 US89051978A US4194752A US 4194752 A US4194752 A US 4194752A US 89051978 A US89051978 A US 89051978A US 4194752 A US4194752 A US 4194752A
Authority
US
United States
Prior art keywords
truck
section
sections
axle
pair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/890,519
Other languages
English (en)
Inventor
Gerhard Tilch
Wolfgang Friedrich
Herbert Dobhan
Hermann Hetterich
Peter Horling
Sigismund Finzel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF GmbH
Original Assignee
SKF Kugellagerfabriken GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SKF Kugellagerfabriken GmbH filed Critical SKF Kugellagerfabriken GmbH
Application granted granted Critical
Publication of US4194752A publication Critical patent/US4194752A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/01—Skateboards
    • A63C17/011—Skateboards with steering mechanisms
    • A63C17/012—Skateboards with steering mechanisms with a truck, i.e. with steering mechanism comprising an inclined geometrical axis to convert lateral tilting of the board in steering of the wheel axis
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/01—Skateboards

Definitions

  • the present invention relates to skateboards and more specifically to one comprising an elongated blank or board and a pair of trucks at opposite ends of the board each supporting a pair of wheels.
  • Each truck is braced directly to the board by means of a hanger plate secured to the board and comprises a tensile elastic suspension section and a pivot support.
  • the path of travel of the front and rear wheels and thereby the direction of the skateboard are controlled by the rider's shifting of weight.
  • the skateboard is also at the same time accelerated by weight shifts.
  • Conventional trucks of known design are usually made of a solid, one-piece metallic casting or the like which have the disadvantage of adding weight to the assembly and also are comparatively expensive to manufacture.
  • the pivot support for the truck is usually formed by a cylindrically-shaped part which mates with a bore suitably lined with a bearing material, such as plastic, mounted in a hanger plate and is supported in this position by a spherical frontal surface.
  • the truck can only rotate about an axis determined by the shaft of the cylindrical part and this tends to restrict the free adjustability of the wheels. Additionally it has been found that a substantial expenditure of energy is required to steer and accelerate the skateboard. Furthermore in these known skateboard designs, the elastic action bushings are secured by nuts and lock washers which necessitates an inconvenient and time consuming initial tightening adjustment.
  • skateboard assembly characterized by novel features of construction and arrangement providing improved steering action of the axles relative to the board and wherein the energy for steering and accelerating the skateboard is substantially reduced.
  • Another object of the present invention is to provide an improved skateboard design incorporating a novel mounting arrangement for the elastic action bushings providing adjustability of the tension thereof in a more simplified, easier and trouble-free manner.
  • the skateboard comprises an elongated board, trucks rotatably supporting a pair of wheels at opposite ends of the board.
  • the trucks are mounted directly on the board or to a hanger plate by at least one tensile elastic element and a pivot support member.
  • the pivot support is a universally movable ball and socket joint.
  • a ball head provided with a pin insertable in a bore in the truck can be used as the ball element and a spherical cup made of a low friction material, e.g. plastic mounted in a bore in the hanger plate or in the board itself can be used as the spherical cup or seat for the ball head.
  • the truck is formed by two sheet metal parts.
  • one of the truck sections is Y-shaped wherein one leg of the Y surrounds the axle and the other truck section is V-shaped and oriented to lie between both of the free legs of the Y-shaped truck section.
  • the ball head of the pivot support is supported in a generally cylindrical pocket formed by one pair of legs of the complementary truck sections.
  • the truck attains a greater movability with respect to the board providing a pure rolling motion between the ball head and the spherical cup.
  • the expenditure of energy needed to deflect the wheels is smaller so that even with a small shift in body weight, the wheels are deflected to change the direction of the skateboard.
  • less energy is needed to create a greater thrust to accelerate the skateboard. It is therefore possible to design the parts of the ball and socket joint integral with the connecting parts or separate from them.
  • a lighter construction is achieved which is simpler and more economical to manufacture and also has the added advantage of reduction in weight of the overall assembly and thus the masses to be accelerated are reduced.
  • a ball head provided with a pin can be pressed by a friction fit into a recess or pocket formed by the adjoining, confronting legs of the truck sections.
  • the king pin or bolt assembly for mounting the elastic elements includes a nut to secure the king pin to the board or hanger plate and a nut engaging threads on the outer terminal end of the king pin remote from the head which provides a simple means for adjusting the tension of the elastic elements.
  • Another feature of the assembly of the present invention is the provision of elongated holes or openings in the baseplate running parallel to the longitudinal axis of the board for securing the baseplate to the board and providing a degree of adjustability to vary the distance between the axles of the front and rear wheels.
  • FIG. 1 is a side elevational view of a skateboard constructed in accordance with the present invention
  • FIG. 2 is a front view of the skateboard with one of the wheels in section to show the mounting of the wheel on the axle;
  • FIG. 3 is an enlarged longitudinal sectional view of the truck assembly
  • FIG. 4 is a top plan view of the truck
  • FIG. 5 is a longitudinal sectional view of a modified truck design in accordance with the present invention.
  • FIG. 6 is a top plan view of the truck assembly shown in FIG. 5
  • the skateboard comprises an elongated board 1 of generally conventional design, a pair of trucks 2 and 3 mounted on the underside adjacent opposite ends of the board at a distance from one another.
  • Each truck rotatably supports a pair of wheels 5 journalled on outer terminal ends of a common axle 4.
  • the mounting of the wheels on the axle is by conventional anti-friction bearings.
  • each truck is supported on a hanger plate 8 by means of a tensile elastic suspension section 6 and a pivot support 7.
  • the hanger plate 8 in turn is attached to the board by means of nut and bolt fasteners.
  • the truck is formed by a pair of complementary truck sections 9 and 10 suitably formed from sheet metal by a conventional stamping operation.
  • the truck section 9 is Y-shaped in cross section and includes an axle support portion 11 formed by the stem of the Y and angularly disposed leg sections 12 and 13.
  • the complementary truck section 10 is V-shaped and of a predetermined configuration to fit and lie between the legs 12 and 13 of the truck section 9.
  • the truck sections 9 and 10 are connected to one another in a suitable manner, for example, by projection welding and may be provided with stiffening ribs, seams or creases.
  • the axle 4 is centered in the axle support portion 11 by means of a circular groove type recess 4a in the axle into which the leg 11 engages.
  • the pivot support 7, in the present instance, comprises a ball head 18 having a depending cylindrical pin 17 which seats in a pocket 16 formed by the arcuately shaped projections 14 and 15 in one leg of the truck sections 9 and 10.
  • the ball head engages in a spherical cup 19 formed in the shaped or contoured portion of the base plate 8.
  • the tensile elastic suspension section 6 of the truck to brace it to the hanger plate 8 includes an elongated bolt or king pin 25 and a pair of action bushings 23 and 24 made of an elastic material, such as rubber, which circumscribe the king pin in the manner illustrated in FIG. 3.
  • the king pin as illustrated has an enlarged head 27 and a nut 26 to clamp it to the hanger plate.
  • the king pin 25 extends through an opening or bore 20 of a collar arm 22 formed by the leg 12 of the Y-shaped truck section 9 and by the leg 21 of the V-shaped truck section 10.
  • the bushings 23 and 24 are disposed on either side of the collar arm 22 and are encompassed by disc-like washers 28 and 29 having axially projecting peripheral rims or flanges 28a and 29a.
  • the bushings and washers are supported on the king pin 25 by an adjusting nut 31 threadedly mounted on the outer terminal end of the king pin 25.
  • the washers 29 include an axially projecting circular ring 30 which engages into the bore 20 of the collar arm 22.
  • the positioning of the nut 31 on the king pin determines the axial tension of the action bushings 23 and 24.
  • the maneuverability of the truck can be varied by selectively increasing or decreasing the tension of the bushings through the adjusting nut 31.
  • the hanger plate 8 is secured to the board by means of nut and bolt fasteners or the like.
  • elongated generally oval shaped holes 32 are provided in the hanger plate which extend in a longitudinal direction. This provides a means for shifting the trucks in a direction along the longitudinal plane of the board.
  • the design of the pivot support as a universally movable joint allows for maximum adjustability of the trucks and thereby adjustability of the axle 4 in various directions. This provides for optimum steerability with the least expenditure of energy.
  • FIGS. 5 and 6 There is illustrated in FIGS. 5 and 6 a modified truck assembly constructed in accordance with the present invention.
  • the general arrangement of the assembly is essentially the same as the previously described embodiment and includes a pivot support 7 and a tensile elastic assembly 6.
  • the truck is a one-piece assembly which may be made of a solid metallic material which may be cast or machined.
  • the pivot support includes a ball head 18 which in the present instance seats in a cup 34 mounted in the hanger plate, the cup 34 being formed with a spherical seat to allow universal adjusting pivotal movement of the ball head therein.
  • the ball head has a cylindrical pin which engages in a bore 33 of the pivot support. This design therefore allows the same universal mobility of the truck with respect to the board as in the previously described embodiment.
  • the elastic tension assembly 6 includes a king pin 25 mounted to the hanger plate between its enlarged head and a nut 26.
  • the action bushings 23, 24 circumscribe the king pin 25 and are disposed on opposite sides of a collar arm 22a formed integrally with the pivot support. In this instance the inner confronting faces of the action bushings bear directly against the collar arm adjacent the opening for the king pin and outer washers engage between the action bushings and the nut 26 and the adjusting nut 31.
  • the hanger plate is also provided with elongated generally oval-shaped holes 32 for selectively varying the position of the front and rear axles relative to one another.

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  • Motorcycle And Bicycle Frame (AREA)
US05/890,519 1978-01-25 1978-03-27 Skateboard Expired - Lifetime US4194752A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE7802146 1978-01-25
DE7802146 1978-01-25

Publications (1)

Publication Number Publication Date
US4194752A true US4194752A (en) 1980-03-25

Family

ID=6687935

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/890,519 Expired - Lifetime US4194752A (en) 1978-01-25 1978-03-27 Skateboard

Country Status (2)

Country Link
US (1) US4194752A (no)
FR (1) FR2415469A1 (no)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311319A (en) * 1980-08-18 1982-01-19 Snyder Skate Co., Inc. Roller skate
US4372566A (en) * 1980-04-14 1983-02-08 Smith Richard D Molded base plate for rollerskates attachable to shoes
US4645223A (en) * 1985-02-21 1987-02-24 Grossman Richard D Skateboard assembly
US4759558A (en) * 1987-04-14 1988-07-26 Woods David B Skateboard
US4930794A (en) * 1988-08-29 1990-06-05 Chan David M Toy skateboard with steerable truck assemblies
US5046750A (en) * 1987-07-07 1991-09-10 Ulrike Heubl Rolling coaster for small children
US5052702A (en) * 1988-08-29 1991-10-01 Chan David M Toy skateboard with steerable truck assemblies
US5165710A (en) * 1990-04-02 1992-11-24 Arthur Runyon Skateboard device
US6102415A (en) * 1996-10-22 2000-08-15 Stewardson; John Edward Inherently stable rideable platform
EP1080751A1 (en) * 1999-08-31 2001-03-07 Unicomm Corporation Skateboard truck assembly
US6443471B1 (en) 2000-05-17 2002-09-03 Dwindle, Inc. Skateboard truck assembly
US6467782B1 (en) * 2000-10-23 2002-10-22 Marc Smith Skateboard device
US6739603B1 (en) * 1999-09-13 2004-05-25 George Powell Truck for skateboard or roller skate
US20050134013A1 (en) * 2003-12-17 2005-06-23 Wright Steven P. Skateboard with suspension system
GB2416313A (en) * 2004-07-15 2006-01-25 Michael Trew Skate suspension system
WO2008138019A1 (en) * 2007-05-02 2008-11-13 Michael Olaf Trew Roller skate and skate board
US20090256324A1 (en) * 2008-04-04 2009-10-15 Stephen Lake Suspension skateboard truck
US20100001483A1 (en) * 2006-05-19 2010-01-07 Bruno Sentagnes Skateboard
US20100225088A1 (en) * 2007-03-05 2010-09-09 Wernli Bradley E Three-wheeled rear-steering scooter
US20100297916A1 (en) * 2008-11-26 2010-11-25 Applied Materials, Inc. Methods of using optical metrology for feed back and feed forward process control
US20110148055A1 (en) * 2009-12-18 2011-06-23 J.V. Precision Machine Co. Skateboard truck
WO2012078474A1 (en) * 2010-12-09 2012-06-14 B.E.W. Squared, Llc Skate truck
US8469377B2 (en) 2009-06-25 2013-06-25 Sbyke Usa Llc Truck assembly
US20130175774A1 (en) * 2012-01-05 2013-07-11 Robert Lininger, JR. Skateboard truck and caster with suspension mechanism
US8602422B2 (en) 2010-12-09 2013-12-10 Sbyke Usa Llc Three wheeled scooter with rear skate truck and fixed front wheel
US8684376B2 (en) 2012-01-09 2014-04-01 James Wurst Three wheel lean-steer skateboard
US8746716B1 (en) 2012-01-09 2014-06-10 James Wurst Three wheel lean-steer skateboard
US8827296B2 (en) 2007-03-05 2014-09-09 Sbyke Usa Llc Three-wheeled rear-steering scooter
US8936263B2 (en) 2012-08-31 2015-01-20 Joel Rawlins Extruded adjustable skateboard
US20180178110A1 (en) * 2016-07-21 2018-06-28 Solid Design & Mfg. Corp., Ltd. Skateboard with variable-rate elastomeric steering control spring
US10881945B2 (en) * 2018-11-15 2021-01-05 J.D Components Co., Ltd. Skateboard
US11478692B2 (en) * 2018-02-23 2022-10-25 Solid Design & Mfg. Corp., Ltd. Skateboard with variable-rate elastomeric steering control spring
EP4378550A1 (en) * 2022-12-02 2024-06-05 HLC SB Distribution, S.L. Skateboard wheel truck

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719725A (en) * 1948-07-22 1955-10-04 Chicago Roller Skate Co Yieldable wheel mounting for roller skate
US2797926A (en) * 1951-01-22 1957-07-02 Swensson Carl Einar Roller skate having resilient truck mounting with lubricated ball joint connection
US2899209A (en) * 1959-08-11 Combined truck and toe stop for roller skates
US3104887A (en) * 1963-09-24 Roller skate plate and truck mounting assembly
US3862763A (en) * 1973-10-25 1975-01-28 Chicago Roller Skate Co Roller skate construction with releasably, lockable and adjustable action screw
US4029330A (en) * 1976-05-05 1977-06-14 Runyan Jr Paul S Cambered skateboard provided with longitudinally adjustable truck assemblies

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899209A (en) * 1959-08-11 Combined truck and toe stop for roller skates
US3104887A (en) * 1963-09-24 Roller skate plate and truck mounting assembly
US2719725A (en) * 1948-07-22 1955-10-04 Chicago Roller Skate Co Yieldable wheel mounting for roller skate
US2797926A (en) * 1951-01-22 1957-07-02 Swensson Carl Einar Roller skate having resilient truck mounting with lubricated ball joint connection
US3862763A (en) * 1973-10-25 1975-01-28 Chicago Roller Skate Co Roller skate construction with releasably, lockable and adjustable action screw
US4029330A (en) * 1976-05-05 1977-06-14 Runyan Jr Paul S Cambered skateboard provided with longitudinally adjustable truck assemblies

Cited By (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372566A (en) * 1980-04-14 1983-02-08 Smith Richard D Molded base plate for rollerskates attachable to shoes
US4311319A (en) * 1980-08-18 1982-01-19 Snyder Skate Co., Inc. Roller skate
US4645223A (en) * 1985-02-21 1987-02-24 Grossman Richard D Skateboard assembly
US4759558A (en) * 1987-04-14 1988-07-26 Woods David B Skateboard
WO1988007884A1 (en) * 1987-04-14 1988-10-20 Woods David B Skateboard
US5046750A (en) * 1987-07-07 1991-09-10 Ulrike Heubl Rolling coaster for small children
US4930794A (en) * 1988-08-29 1990-06-05 Chan David M Toy skateboard with steerable truck assemblies
US5052702A (en) * 1988-08-29 1991-10-01 Chan David M Toy skateboard with steerable truck assemblies
US5165710A (en) * 1990-04-02 1992-11-24 Arthur Runyon Skateboard device
US6102415A (en) * 1996-10-22 2000-08-15 Stewardson; John Edward Inherently stable rideable platform
EP1080751A1 (en) * 1999-08-31 2001-03-07 Unicomm Corporation Skateboard truck assembly
US6547262B1 (en) 1999-08-31 2003-04-15 Unicomm Corporation Skateboard truck assembly
US6739603B1 (en) * 1999-09-13 2004-05-25 George Powell Truck for skateboard or roller skate
US6443471B1 (en) 2000-05-17 2002-09-03 Dwindle, Inc. Skateboard truck assembly
US6467782B1 (en) * 2000-10-23 2002-10-22 Marc Smith Skateboard device
US20050134013A1 (en) * 2003-12-17 2005-06-23 Wright Steven P. Skateboard with suspension system
US7044486B2 (en) 2003-12-17 2006-05-16 Nike, Inc. Skateboard with suspension system
GB2416313A (en) * 2004-07-15 2006-01-25 Michael Trew Skate suspension system
US20100001483A1 (en) * 2006-05-19 2010-01-07 Bruno Sentagnes Skateboard
US8100420B2 (en) * 2006-05-19 2012-01-24 Bruno Sentagnes Skateboard
US8998226B2 (en) 2007-03-05 2015-04-07 Sbyke Usa Llc Three-wheeled rear-steering scooter
US9937974B2 (en) 2007-03-05 2018-04-10 Sbyke Usa Llc Three-wheeled rear-steering scooter
US9296443B2 (en) 2007-03-05 2016-03-29 Sbyke Usa Llc Three-wheeled rear-steering scooter
US9533728B2 (en) 2007-03-05 2017-01-03 Sbyke Usa Llc Three-wheeled rear-steering scooter
US10300976B2 (en) 2007-03-05 2019-05-28 Sbyke Usa Llc Three-wheeled rear-steering scooter
US20100225088A1 (en) * 2007-03-05 2010-09-09 Wernli Bradley E Three-wheeled rear-steering scooter
US8336894B2 (en) 2007-03-05 2012-12-25 B.E.W. Squared, Llc Three-wheeled rear-steering scooter
US8827296B2 (en) 2007-03-05 2014-09-09 Sbyke Usa Llc Three-wheeled rear-steering scooter
US20100295260A1 (en) * 2007-05-02 2010-11-25 Michael Olaf Trew Roller skate and skate board
WO2008138019A1 (en) * 2007-05-02 2008-11-13 Michael Olaf Trew Roller skate and skate board
US20090256324A1 (en) * 2008-04-04 2009-10-15 Stephen Lake Suspension skateboard truck
US7984917B2 (en) * 2008-04-04 2011-07-26 Seal Trademarks Pty Ltd Suspension skateboard truck
US20100297916A1 (en) * 2008-11-26 2010-11-25 Applied Materials, Inc. Methods of using optical metrology for feed back and feed forward process control
US8469377B2 (en) 2009-06-25 2013-06-25 Sbyke Usa Llc Truck assembly
US8424882B2 (en) * 2009-12-18 2013-04-23 Surf-Rodz Llc Skateboard truck
US20110148055A1 (en) * 2009-12-18 2011-06-23 J.V. Precision Machine Co. Skateboard truck
US8801008B2 (en) 2010-12-09 2014-08-12 Sbyke Usa Llc Three wheeled scooter with rear skate truck and fixed front wheel
US8602422B2 (en) 2010-12-09 2013-12-10 Sbyke Usa Llc Three wheeled scooter with rear skate truck and fixed front wheel
CN103402591A (zh) * 2010-12-09 2013-11-20 B.E.W.方有限责任公司 滑轨转向架
CN103402591B (zh) * 2010-12-09 2015-07-01 B.E.W.方有限责任公司 滑轨转向架
AU2011338715B2 (en) * 2010-12-09 2016-10-06 B.E.W. Squared, Llc A suspension for a vehicle
US8448954B2 (en) 2010-12-09 2013-05-28 Sbyke Usa Llc Skate truck
WO2012078474A1 (en) * 2010-12-09 2012-06-14 B.E.W. Squared, Llc Skate truck
US9295902B2 (en) * 2012-01-05 2016-03-29 Robert Lininger, JR. Skateboard truck and caster with suspension mechanism
US20130175774A1 (en) * 2012-01-05 2013-07-11 Robert Lininger, JR. Skateboard truck and caster with suspension mechanism
US8746716B1 (en) 2012-01-09 2014-06-10 James Wurst Three wheel lean-steer skateboard
US8684376B2 (en) 2012-01-09 2014-04-01 James Wurst Three wheel lean-steer skateboard
US8936263B2 (en) 2012-08-31 2015-01-20 Joel Rawlins Extruded adjustable skateboard
US20180178110A1 (en) * 2016-07-21 2018-06-28 Solid Design & Mfg. Corp., Ltd. Skateboard with variable-rate elastomeric steering control spring
US10881944B2 (en) * 2016-07-21 2021-01-05 Solid Design & Mfg. Corp., Ltd. Skateboard with variable-rate elastomeric steering control spring
US11478692B2 (en) * 2018-02-23 2022-10-25 Solid Design & Mfg. Corp., Ltd. Skateboard with variable-rate elastomeric steering control spring
US10881945B2 (en) * 2018-11-15 2021-01-05 J.D Components Co., Ltd. Skateboard
EP4378550A1 (en) * 2022-12-02 2024-06-05 HLC SB Distribution, S.L. Skateboard wheel truck

Also Published As

Publication number Publication date
FR2415469B3 (no) 1980-11-28
FR2415469A1 (fr) 1979-08-24

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